Quantum liquid droplets in a mixture of Bose-Einstein condensates

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dc.contributor	Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques
dc.contributor.author	Cabrera, C. R.
dc.contributor.author	Tanzi, L.
dc.contributor.author	Sanz, J.
dc.contributor.author	Naylor, B.
dc.contributor.author	Thomas, P.
dc.contributor.author	Cheiney, P.
dc.contributor.author	Tarruell, L.
dc.date	2017
dc.identifier.citation	Cabrera, C. R. [et al.]. Quantum liquid droplets in a mixture of Bose-Einstein condensates. 2017.
dc.identifier.uri	http://hdl.handle.net/2117/111147
dc.language.iso	eng
dc.relation	info:eu-repo/grantAgreement/EC/FP7/631633/EU/Exploring magnetic quantum phase transitions with ultra-cold Fermi gases/MAG-QUPT
dc.relation	info:eu-repo/grantAgreement/EC/H2020/641122/EU/Quantum simulations of insulators and conductors/QUIC
dc.relation	info:eu-repo/grantAgreement/ES/1PE/FIS2014-59546-P
dc.relation	SEV-2015-0522
dc.relation	FOR2414
dc.relation	SGR874
dc.relation	BES-2015- 072186
dc.relation	info:eu-repo/grantAgreement/EC/H2020/657439/EU/Topological physics in tunable optical lattices/TOP-DOL
dc.relation	RYC-2015-17890
dc.relation	http://hdl.handle.net/2117/111148
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Física
dc.subject	Quantum Optics
dc.subject	Quantum gases
dc.subject	Òptica quàntica
dc.title	Quantum liquid droplets in a mixture of Bose-Einstein condensates
dc.type	info:eu-repo/semantics/draft
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Bose-Einstein condensates
dc.description.abstract	quantum mixtures
dc.description.abstract	quantum liquids
dc.description.abstract	quantum fluctuations
dc.description.abstract	Quantum droplets are small clusters of atoms self-bound by the balance of attractive and repulsive forces. Here we report on the observation of a novel type of droplets, solely stabilized by contact interactions in a mixture of two Bose-Einstein condensates. We demonstrate that they are several orders of magnitude more dilute than liquid helium by directly measuring their size and density via in situ imaging. Moreover, by comparison to a single-component condensate, we show that quantum many-body effects stabilize them against collapse. We observe that droplets require a minimum atom number to be stable. Below, quantum pressure drives a liquid-to-gas transition that we map out as a function of interaction strength. These ultra-dilute isotropic liquids remain weakly interacting and constitute an ideal platform to benchmark quantum many-body theories.
dc.description.abstract	Peer Reviewed

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